Buggy code:
public class Main { public static final String THROWN_PREFIX = ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( "Exception<seq2seq4repair_space>thrown<seq2seq4repair_space>from<seq2seq4repair_space>AspectJ<seq2seq4repair_space>" + ( Version . text ) ) + ( LangUtil . EOL ) ) + "" ) + ( LangUtil . EOL ) ) + "This<seq2seq4repair_space>might<seq2seq4repair_space>be<seq2seq4repair_space>logged<seq2seq4repair_space>as<seq2seq4repair_space>a<seq2seq4repair_space>bug<seq2seq4repair_space>already<seq2seq4repair_space>--<seq2seq4repair_space>find<seq2seq4repair_space>current<seq2seq4repair_space>bugs<seq2seq4repair_space>at" ) + ( LangUtil . EOL ) ) + "<seq2seq4repair_space>http:////bugs.eclipse.org//bugs//buglist.cgi?product=AspectJ&component=Compiler" ) + ( LangUtil . EOL ) ) + "" ) + ( LangUtil . EOL ) ) + "Bugs<seq2seq4repair_space>for<seq2seq4repair_space>exceptions<seq2seq4repair_space>thrown<seq2seq4repair_space>have<seq2seq4repair_space>titles<seq2seq4repair_space>File:line<seq2seq4repair_space>from<seq2seq4repair_space>the<seq2seq4repair_space>top<seq2seq4repair_space>stack,<seq2seq4repair_space>" ) + ( LangUtil . EOL ) ) + "e.g.,<seq2seq4repair_space>\"SomeFile.java:243\"" ) + ( LangUtil . EOL ) ) + "" ) + ( LangUtil . EOL ) ) + "If<seq2seq4repair_space>you<seq2seq4repair_space>don't<seq2seq4repair_space>find<seq2seq4repair_space>the<seq2seq4repair_space>exception<seq2seq4repair_space>below<seq2seq4repair_space>in<seq2seq4repair_space>a<seq2seq4repair_space>bug,<seq2seq4repair_space>please<seq2seq4repair_space>add<seq2seq4repair_space>a<seq2seq4repair_space>new<seq2seq4repair_space>bug" ) + ( LangUtil . EOL ) ) + "at<seq2seq4repair_space>http:////bugs.eclipse.org//bugs//enter_bug.cgi?product=AspectJ" ) + ( LangUtil . EOL ) ) + "To<seq2seq4repair_space>make<seq2seq4repair_space>the<seq2seq4repair_space>bug<seq2seq4repair_space>a<seq2seq4repair_space>priority,<seq2seq4repair_space>please<seq2seq4repair_space>include<seq2seq4repair_space>a<seq2seq4repair_space>test<seq2seq4repair_space>program" ) + ( LangUtil . EOL ) ) + "that<seq2seq4repair_space>can<seq2seq4repair_space>reproduce<seq2seq4repair_space>this<seq2seq4repair_space>exception." ) + ( LangUtil . EOL ) ; public static void main ( String [ ] args ) throws IOException { } public static String renderExceptionForUser ( Throwable thrown ) { } private static void appendNLabel ( StringBuffer sink , String label , int numItems ) { } protected Main . CommandController controller ; protected String commandName ; private IMessageHolder clientHolder ; protected final MessageHandler ourHandler ; private int lastFails ; private int lastErrors ; private Runnable completionRunner ; public Main ( ) { } public void runMain ( String [ ] args , boolean useSystemExit ) { } public void run ( String [ ] args , IMessageHolder holder ) { } public void quit ( ) { } public void setHolder ( IMessageHolder holder ) { } public void setCompletionRunner ( Runnable runner ) { } protected void systemExit ( IMessageHolder messages ) { } protected void outMessage ( String message ) { } protected boolean report ( boolean pass , IMessageHolder holder ) { } protected static void fail ( IMessageHandler handler , String message , Throwable thrown ) { } public static class MessagePrinter implements IMessageHandler { public static final IMessageHandler VERBOSE = new Main . MessagePrinter ( true ) ; public static final IMessageHandler TERSE = new Main . MessagePrinter ( false ) ; final boolean verbose ; protected MessagePrinter ( boolean verbose ) { } public boolean handleMessage ( IMessage message ) { } protected String render ( IMessage message ) { IMessage . Kind kind = message . getKind ( ) ; StringBuffer sb = new StringBuffer ( ) ; String text = message . getMessage ( ) ; if ( text . equals ( NO_MESSAGE_TEXT ) ) { text = null ; } boolean toString = LangUtil . isEmpty ( text ) ; if ( toString ) { text = message . toString ( ) ; } <START_BUG> ISourceLocation loc = message . getISourceLocation ( ) ; <END_BUG> String context = null ; if ( null != loc ) { File file = loc . getSourceFile ( ) ; if ( null != file ) { String name = file . getName ( ) ; if ( ( ! toString ) || ( ( - 1 ) == ( text . indexOf ( name ) ) ) ) { sb . append ( FileUtil . getBestPath ( file ) ) ; sb . append ( ( ":" + ( loc . getLine ( ) ) ) ) ; int col = loc . getColumn ( ) ; if ( 0 < col ) { sb . append ( ( ":" + col ) ) ; } sb . append ( "<seq2seq4repair_space>" ) ; } } context = loc . getContext ( ) ; } sb . append ( text ) ; if ( null != context ) { sb . append ( EOL ) ; sb . append ( context ) ; } Throwable thrown = message . getThrown ( ) ; if ( null != thrown ) { sb . append ( EOL ) ; sb . append ( Main . renderExceptionForUser ( thrown ) ) ; } return sb . toString ( ) ; } public boolean isIgnoring ( IMessage . Kind kind ) { } protected PrintStream getStreamFor ( IMessage . Kind kind ) { } } public static class CommandController { public static String TAG_FILE_OPTION = "-XincrementalFile" ; public static String INCREMENTAL_OPTION = "-incremental" ; public static long MAX_DELAY = 1000 * 600 ; public static long DEFAULT_DELAY = 1000 * 5 ; private static String [ ] [ ] OPTIONS = new String [ ] [ ] { new String [ ] { Main . CommandController . INCREMENTAL_OPTION } , new String [ ] { Main . CommandController . TAG_FILE_OPTION , null } } ; private boolean running ; private boolean quit ; private boolean incremental ; private File tagFile ; private long fileModTime ; private long delay ; private boolean buildFresh ; public CommandController ( ) { } public String [ ] init ( String [ ] args , IMessageHandler sink ) { } public boolean running ( ) { } public void setDelay ( long delay ) { } public boolean incremental ( ) { } public boolean commandLineIncremental ( ) { } public void quit ( ) { } boolean buildFresh ( ) { } boolean doRepeatCommand ( ) { } protected void fileCheckDelay ( ) { } } }

Fix:
ISourceLocation loc = message . getSourceLocation ( ) ;